US troops, with soldiers wearing WWI helmets, walk on the Champs Elysees during a rehearsal of the traditional Bastille Day military parade in Paris, France, July 10, 2017
US troops, with soldiers wearing WWI helmets, walk on the Champs Elysees during a rehearsal of the traditional Bastille Day military parade in Paris, France, July 10, 2017. Photo: Pascal Rossignol / Reuters